To generate a SHA256 hash for a class, record, or structure, you can utilize the following code snippet:

public static string ComputeSha256Hash(object obj)
{
    // Create a SHA256
    var bytes = SHA256.HashData(Encoding.UTF8.GetBytes(obj.ToJson()));

    // Convert byte array to a string
    var sb = _stringBuilderPool.Get();

    try
    {
        for (var byteIndex = 0; byteIndex < bytes.Length; byteIndex++)
        {
            _ = sb.Append(bytes[byteIndex].ToString("x2", CultureInfo.InvariantCulture));
        }

        return sb.ToString();
    }
    finally
    {
        _stringBuilderPool.Return(sb);
    }
}

Next, let’s evaluate the performance of hashing these three distinct types.

Benchmark Results

As evident from these results, hashing a reference type (class) is 1.02 times faster than a value type (structure) and 1.05 times more performant than a record type. Please note that these findings are provided for your reference.

Pick up any books by David McCarter by going to Amazon.com: http://bit.ly/RockYourCodeBooks

If you liked this article, please buy David a cup of Coffee by going here: https://www.buymeacoffee.com/dotnetdave

© The information in this article is copywritten and cannot be preproduced in any way without express permission from David McCarter.